# -*- coding: utf-8 *-*
# File: tkSimpleDialog.py

from Tkinter import *
import os


class Dialog(Toplevel):

    def __init__(self, parent, title=None):
        Toplevel.__init__(self, parent)
        self.transient(parent)
        if title:
            self.title(title)
        self.parent = parent
        self.result = None
        body = Frame(self)
        self.initial_focus = self.body(body)
        body.pack(padx=5, pady=5)
        self.buttonbox()
        self.grab_set()
        if not self.initial_focus:
            self.initial_focus = self
        self.protocol("WM_DELETE_WINDOW", self.cancel)
        self.geometry("+%d+%d" % (parent.winfo_rootx() + 50,
                                  parent.winfo_rooty() + 50))
        self.initial_focus.focus_set()
        self.wait_window(self)
    #
    # construction hooks

    def body(self, master):
        # create dialog body.  return widget that should have
        # initial focus.  this method should be overridden
        pass

    def buttonbox(self):
        # add standard button box. override if you don't want the
        # standard buttons
        box = Frame(self)
        w = Button(box, text="OK", width=10, command=self.ok, default=ACTIVE)
        w.pack(side=LEFT, padx=5, pady=5)
        w = Button(box, text="Cancel", width=10, command=self.cancel)
        w.pack(side=LEFT, padx=5, pady=5)
        self.bind("&lt;Return>", self.ok)
        self.bind("&lt;Escape>", self.cancel)
        box.pack()
    #
    # standard button semantics

    def ok(self, event=None):
        if not self.validate():
            self.initial_focus.focus_set()
            return
        self.withdraw()
        self.update_idletasks()
        self.apply()
        self.cancel()

    def cancel(self, event=None):
        # put focus back to the parent window
        self.parent.focus_set()
        self.destroy()
    #
    # command hooks

    def validate(self):
        return 1  # override

    def apply(self):
        pass  # override
